Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 280mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ32 mm
- Stroke280 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-20
The AirTAC SAIJ32X280-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 260 to 280 mm, allowing you to dial back the 280 mm nominal stroke by up to 20 mm during commissioning. In the 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
This variant uses an SUS420J2 stainless steel rod for improved corrosion resistance over standard carbon steel. The barrel is an extruded aluminum profile with sensor grooves on both sides, and the PT tapered port thread matches the G1/8 air supply standard for this bore size. The rear adjuster acts purely as a travel stop for end-position tuning, not as a load-holding lock.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×280 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-20 Is Used
End-Stop Tuning
Fine-tune the retraction end-position by up to 20 mm during machine commissioning without swapping the cylinder.
Product Changeover
Adjust the 260-280 mm travel window on packaging lines to accommodate slight variations in new product sizes.
Assembly Positioning
Dial in the exact retracted height for delicate assembly operations where a fixed 280 mm stroke would overshoot.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-20 the Right Cylinder?
Select this 32 mm bore model when you need precise end-position tuning without adding external stops. If your application requires higher thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. Conversely, if you need less force, there is no smaller standard SAIJ bore. The adjustable stroke is ideal for product changeovers on a line, whereas a fixed-stroke SAI cylinder locks you into one exact dimension.
For load-holding without live air pressure, this cylinder is not suitable since the adjuster and air cushions only decelerate travel. You would need an external pilot-operated check valve or a related SAIL pneumatic lock cylinder. Because the 280 mm stroke is relatively long for the 12 mm rod diameter, an external guide is recommended to prevent excessive side-load wear. This SAIJ model is dimensionally interchangeable per ISO 15552 and uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-20 FAQ
At a 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At 0.7 MPa, the push force increases to 563 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the 280 mm nominal stroke down to 260 mm. It sets the end position but does not lock the load without live air pressure.
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